Pith Number

pith:WA5YOM4J

pith:2026:WA5YOM4JC2FDETQYSEZNFCYU3A

not attested not anchored not stored refs pending

ECI: Effective Contrastive Information to Evaluate Hard-Negatives

Aarush Sinha, Aman Bansal, Rahul Seetharaman

arxiv:2603.20990 v2 · 2026-03-22 · cs.IR · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WA5YOM4JC2FDETQYSEZNFCYU3A}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-05T01:14:37.078465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b03b873389168a324e189132d28b14d83f43833b2dbdfb3b989ccf05a15aa93f

Aliases

arxiv: 2603.20990 · arxiv_version: 2603.20990v2 · doi: 10.48550/arxiv.2603.20990 · pith_short_12: WA5YOM4JC2FD · pith_short_16: WA5YOM4JC2FDETQY · pith_short_8: WA5YOM4J

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/WA5YOM4JC2FDETQYSEZNFCYU3A \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b03b873389168a324e189132d28b14d83f43833b2dbdfb3b989ccf05a15aa93f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "665ea58c5a6c3d213779928c9e59f2c43cb9dfb60ee3e4acd0c134552a873cc8",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-03-22T00:21:05Z",
    "title_canon_sha256": "89fa387efb37b0f36d44f0cdca5d15049b6cac165b148c9da4cfd237976ac9c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.20990",
    "kind": "arxiv",
    "version": 2
  }
}